Ensure device storage encryption is active

高レベル 1自動android

説明

Android 10+ devices ship with file-based encryption enabled by default; older or modified devices can be unencrypted. ro.crypto.state reports encrypted when FBE/FDE is active. The audit uses adb against the single attached device (set ANDROID_SERIAL when several are connected) and FAILS when adb is missing or no authorised device is connected. adb requires USB debugging, so disable Developer options again after the audit.

チェック方法

監査方法: シェルコマンド

shell

out=$(adb shell getprop ro.crypto.state 2>/dev/null) || exit 1
state=$(printf '%s' "$out" | tr -d '\r[:space:]')
if [ "$state" = encrypted ]; then echo compliant; else echo "ro.crypto.state=${state:-unset}"; fi

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

Devices shipping Android 10+ are encrypted by default; if ro.crypto.state is not 'encrypted' (custom ROM, unlocked bootloader or legacy device) back up, relock the bootloader / reflash stock firmware or retire the device. Legacy devices: Settings > Security > Encrypt phone. EMM: Android Management API policy encryptionPolicy=ENABLED_WITH_PASSWORD.

プロパティ

オペレーティングシステム: すべて
タグ: androidencryptiondata-at-rest
参照: CIS Google Android Benchmark - Encryption (verify section number for your release)

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target android